.main-content {
  position: absolute;
  top: 0;
  bottom: 60px;
  width: 100%;
  /* background-color: lightblue; */
}
.main-menu {
  position: fixed;
  width: 100%;
  height: 60px;
  bottom: 0;
}
.placeholder {
  color: #bbb;
  text-align: center;
  height: 60px;
  line-height: 60px;
  width: 100%;
  z-index: 9999;
}
.placeholder i {
  display: block;
  height: 45px;
  width: 100%;
  font-size: 24px;
  line-height: 45px;
}
.placeholder div {
  height: 15px;
  line-height: 10px;
}
.iconfont {
  font-size: 24px;
}
.active {
  color: orange;
}
.ui.grid > .row {
  padding-top: 0;
  padding-bottom: 0;
}
.main-menu .ui.grid > .row > .column {
  margin-top: 0;
}
